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大时间常数的有源 RC积分器和由它组成的低频电路不能集成实现 ,这是因为这种积分器所需要的电阻阻值和电容容量远远超出了集成工艺所能实现的范围 .提出了一种时间常数倍增器结构 .它可以利用低值的电阻、电容和电流反馈放大器 CFA实现特大时间常数的倍增器 ,从而使大时间常数的有源 RC积分器可以全集成化实现 .该结构可以广泛地应用于需要集成实现的低频电路 .由于该结构采用了新型的有源器件 CFA,使得由它组成的电路具有更优越的性能 ,因而具有很高的实用价值 .用这种结构设计了一个 10 0 Hz的带通滤波电路 ,并进行了计算机模拟 .
The integration of an active RC integrator with a large time constant and a low frequency circuit consisting of this can not be achieved because the resistor and capacitance required for such an integrator are far beyond the reach of the integrated process A time constant multiplier architecture that enables a large time constant active RC integrator to be fully integrated with a low value resistor, capacitor, and current feedback amplifier, CFA, to achieve a very large time constant multiplier. This structure allows It is widely used in low-frequency circuits that need to be integrated and implemented. Because this structure uses a new type of active device CFA, making the circuit composed of it has superior performance and thus has high practical value. With this structure, a 10 0 Hz band-pass filter circuit, and a computer simulation.